A high accuracy ultrasonic measurement system using the prism technique

In this paper, a non-destructive measurement system is proposed to evaluate the elastic properties of highly attenuating homogeneous and non-homogeneous materials. This measurement system is based on a mode conversion technique allowing the evaluation of both compressional (P) and shear (S) waves with only one transducer. In the experimental investigation, the specimen under test (SUT), realized in a prism-shaped form, is tested using the prism technique. Then, the gathered backscattered echoes are estimated using a model-based estimation algorithm in order to extract the desired elastic properties. Accordingly, the estimated parameters are in good agreement with the manufactured values, which demonstrates the effectiveness of the proposed measurement system, and therefore, can be considered as a promising way to robustly evaluate certain properties of highly attenuating materials.